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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 | /* * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) * Licensed under the GPL */ #ifndef __OS_H__ #define __OS_H__ #include "uml-config.h" #include "asm/types.h" #include "../os/include/file.h" #include "sysdep/ptrace.h" #include "kern_util.h" #include "skas/mm_id.h" #define OS_TYPE_FILE 1 #define OS_TYPE_DIR 2 #define OS_TYPE_SYMLINK 3 #define OS_TYPE_CHARDEV 4 #define OS_TYPE_BLOCKDEV 5 #define OS_TYPE_FIFO 6 #define OS_TYPE_SOCK 7 /* os_access() flags */ #define OS_ACC_F_OK 0 /* Test for existence. */ #define OS_ACC_X_OK 1 /* Test for execute permission. */ #define OS_ACC_W_OK 2 /* Test for write permission. */ #define OS_ACC_R_OK 4 /* Test for read permission. */ #define OS_ACC_RW_OK (OS_ACC_W_OK | OS_ACC_R_OK) /* Test for RW permission */ /* * types taken from stat_file() in hostfs_user.c * (if they are wrong here, they are wrong there...). */ struct uml_stat { int ust_dev; /* device */ unsigned long long ust_ino; /* inode */ int ust_mode; /* protection */ int ust_nlink; /* number of hard links */ int ust_uid; /* user ID of owner */ int ust_gid; /* group ID of owner */ unsigned long long ust_size; /* total size, in bytes */ int ust_blksize; /* blocksize for filesystem I/O */ unsigned long long ust_blocks; /* number of blocks allocated */ unsigned long ust_atime; /* time of last access */ unsigned long ust_mtime; /* time of last modification */ unsigned long ust_ctime; /* time of last change */ }; struct openflags { unsigned int r : 1; unsigned int w : 1; unsigned int s : 1; /* O_SYNC */ unsigned int c : 1; /* O_CREAT */ unsigned int t : 1; /* O_TRUNC */ unsigned int a : 1; /* O_APPEND */ unsigned int e : 1; /* O_EXCL */ unsigned int cl : 1; /* FD_CLOEXEC */ }; #define OPENFLAGS() ((struct openflags) { .r = 0, .w = 0, .s = 0, .c = 0, \ .t = 0, .a = 0, .e = 0, .cl = 0 }) static inline struct openflags of_read(struct openflags flags) { flags.r = 1; return(flags); } static inline struct openflags of_write(struct openflags flags) { flags.w = 1; return(flags); } static inline struct openflags of_rdwr(struct openflags flags) { return(of_read(of_write(flags))); } static inline struct openflags of_set_rw(struct openflags flags, int r, int w) { flags.r = r; flags.w = w; return(flags); } static inline struct openflags of_sync(struct openflags flags) { flags.s = 1; return(flags); } static inline struct openflags of_create(struct openflags flags) { flags.c = 1; return(flags); } static inline struct openflags of_trunc(struct openflags flags) { flags.t = 1; return(flags); } static inline struct openflags of_append(struct openflags flags) { flags.a = 1; return(flags); } static inline struct openflags of_excl(struct openflags flags) { flags.e = 1; return(flags); } static inline struct openflags of_cloexec(struct openflags flags) { flags.cl = 1; return(flags); } extern int os_stat_file(const char *file_name, struct uml_stat *buf); extern int os_stat_fd(const int fd, struct uml_stat *buf); extern int os_access(const char *file, int mode); extern void os_print_error(int error, const char* str); extern int os_get_exec_close(int fd, int *close_on_exec); extern int os_set_exec_close(int fd, int close_on_exec); extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg); extern int os_window_size(int fd, int *rows, int *cols); extern int os_new_tty_pgrp(int fd, int pid); extern int os_get_ifname(int fd, char *namebuf); extern int os_set_slip(int fd); extern int os_set_owner(int fd, int pid); extern int os_sigio_async(int master, int slave); extern int os_mode_fd(int fd, int mode); extern int os_seek_file(int fd, __u64 offset); extern int os_open_file(char *file, struct openflags flags, int mode); extern int os_read_file(int fd, void *buf, int len); extern int os_write_file(int fd, const void *buf, int count); extern int os_file_size(char *file, unsigned long long *size_out); extern int os_file_modtime(char *file, unsigned long *modtime); extern int os_pipe(int *fd, int stream, int close_on_exec); extern int os_set_fd_async(int fd, int owner); extern int os_clear_fd_async(int fd); extern int os_set_fd_block(int fd, int blocking); extern int os_accept_connection(int fd); extern int os_create_unix_socket(char *file, int len, int close_on_exec); extern int os_shutdown_socket(int fd, int r, int w); extern void os_close_file(int fd); extern int os_rcv_fd(int fd, int *helper_pid_out); extern int create_unix_socket(char *file, int len, int close_on_exec); extern int os_connect_socket(char *name); extern int os_file_type(char *file); extern int os_file_mode(char *file, struct openflags *mode_out); extern int os_lock_file(int fd, int excl); /* start_up.c */ extern void os_early_checks(void); extern int can_do_skas(void); /* Make sure they are clear when running in TT mode. Required by * SEGV_MAYBE_FIXABLE */ #ifdef UML_CONFIG_MODE_SKAS #define clear_can_do_skas() do { ptrace_faultinfo = proc_mm = 0; } while (0) #else #define clear_can_do_skas() do {} while (0) #endif /* mem.c */ extern int create_mem_file(unsigned long long len); /* process.c */ extern unsigned long os_process_pc(int pid); extern int os_process_parent(int pid); extern void os_stop_process(int pid); extern void os_kill_process(int pid, int reap_child); extern void os_kill_ptraced_process(int pid, int reap_child); extern void os_usr1_process(int pid); extern long os_ptrace_ldt(long pid, long addr, long data); extern int os_getpid(void); extern int os_getpgrp(void); extern void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int)); extern void init_new_thread_signals(int altstack); extern int run_kernel_thread(int (*fn)(void *), void *arg, void **jmp_ptr); extern int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len, int r, int w, int x); extern int os_protect_memory(void *addr, unsigned long len, int r, int w, int x); extern int os_unmap_memory(void *addr, int len); extern void os_flush_stdout(void); /* tt.c * for tt mode only (will be deleted in future...) */ extern void stop(void); extern int wait_for_stop(int pid, int sig, int cont_type, void *relay); extern int protect_memory(unsigned long addr, unsigned long len, int r, int w, int x, int must_succeed); extern void forward_pending_sigio(int target); extern int start_fork_tramp(void *arg, unsigned long temp_stack, int clone_flags, int (*tramp)(void *)); /* uaccess.c */ extern unsigned long __do_user_copy(void *to, const void *from, int n, void **fault_addr, void **fault_catcher, void (*op)(void *to, const void *from, int n), int *faulted_out); /* helper.c */ extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv, unsigned long *stack_out); extern int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, unsigned long *stack_out, int stack_order); extern int helper_wait(int pid); /* umid.c */ extern int umid_file_name(char *name, char *buf, int len); extern int set_umid(char *name); extern char *get_umid(void); /* signal.c */ extern void set_sigstack(void *sig_stack, int size); extern void remove_sigstack(void); extern void set_handler(int sig, void (*handler)(int), int flags, ...); extern int change_sig(int signal, int on); extern void block_signals(void); extern void unblock_signals(void); extern int get_signals(void); extern int set_signals(int enable); extern void os_usr1_signal(int on); /* trap.c */ extern void os_fill_handlinfo(struct kern_handlers h); extern void do_longjmp(void *p, int val); /* util.c */ extern void stack_protections(unsigned long address); extern void task_protections(unsigned long address); extern int raw(int fd); extern void setup_machinename(char *machine_out); extern void setup_hostinfo(void); extern int setjmp_wrapper(void (*proc)(void *, void *), ...); /* time.c */ #define BILLION (1000 * 1000 * 1000) extern void switch_timers(int to_real); extern void idle_sleep(int secs); extern void enable_timer(void); extern void disable_timer(void); extern void user_time_init(void); extern void uml_idle_timer(void); extern unsigned long long os_nsecs(void); /* skas/mem.c */ extern long run_syscall_stub(struct mm_id * mm_idp, int syscall, unsigned long *args, long expected, void **addr, int done); extern long syscall_stub_data(struct mm_id * mm_idp, unsigned long *data, int data_count, void **addr, void **stub_addr); extern int map(struct mm_id * mm_idp, unsigned long virt, unsigned long len, int r, int w, int x, int phys_fd, unsigned long long offset, int done, void **data); extern int unmap(struct mm_id * mm_idp, void *addr, unsigned long len, int done, void **data); extern int protect(struct mm_id * mm_idp, unsigned long addr, unsigned long len, int r, int w, int x, int done, void **data); /* skas/process.c */ extern int is_skas_winch(int pid, int fd, void *data); extern int start_userspace(unsigned long stub_stack); extern int copy_context_skas0(unsigned long stack, int pid); extern void userspace(union uml_pt_regs *regs); extern void map_stub_pages(int fd, unsigned long code, unsigned long data, unsigned long stack); extern void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr, void (*handler)(int)); extern void thread_wait(void *sw, void *fb); extern void switch_threads(void *me, void *next); extern int start_idle_thread(void *stack, void *switch_buf_ptr, void **fork_buf_ptr); extern void initial_thread_cb_skas(void (*proc)(void *), void *arg); extern void halt_skas(void); extern void reboot_skas(void); #endif |